A novel technique for infant length measurement based on stereoscopic vision

Sokolover, Nir; Phillip, Moshe; Sirota, Lea; Potruch, Amalia; Kiryati, Nahum; Klinger, G; Merlob, Paul

doi:10.1136/archdischild-2013-304291

Cited by 8 publications

(19 citation statements)

References 23 publications

(37 reference statements)

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“…Across all studies, the ages of the patients involved ranged from 24 weeks gestational age to 12 years of age. Only four studies concerned preterm infants [33,43,50,53]. In general, QualSys scores are high, reflecting good methodological quality, and the individual scores of the two reviewers correlate.…”

Section: Characteristics Of Studies and Methodological Qualitymentioning

confidence: 99%

“…Some studies explored novel technologies that made use of self-developed hardware and or software [34,35,40,52,53]. One of these concerned smartphone slow-motion video capture, using available (open source or freeware) photogrammetry and 3D-mesh software to obtain 360 degrees 3D scans [34].…”

Section: Plos Onementioning

confidence: 99%

“…One study evaluated a prototype with ultrasonic sensors to measure head circumference inside incubators [40]. Lastly, one study reported a self-developed stereoscopic vision system to measure body length [53] via two digital 2D images, taken from two different viewing angles (Fig 6). On both these images, the user manually places digital marks on corresponding body points-that is head-end, neck, crotch, knee, and heel-with no need to stretch the infant's curled-up legs.…”

Section: Plos Onementioning

confidence: 99%

“…For head measurements with a stationary 3D scanner, the infant was held by an adult or positioned in a chair [36, 37, 39, 41-47, 51, 52, 54, 55, 57], or had to lie inside the scanner during capture [32,37,41,43]. For some measuring techniques, the infant had to be undressed [52,53]. Two techniques claim no special preparation or repositioning of the patient solely for the purpose of measuring, which implies that the patient stays in bed or incubator [33,50].…”

Section: Disturbance Of Patients During Measuring Proceduresmentioning

confidence: 99%

“…We judged two techniques suitable for our purpose: the VECTRA H1 handheld 3D scanner [50] and a self-developed stereoscopic vision system [53].…”

Section: Techniques Assessed As Suitablementioning

confidence: 99%

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Body size measuring techniques enabling stress-free growth monitoring of extreme preterm infants inside incubators: A systematic review

2022

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Introduction Growth monitoring of preterm infants is essential for assessing the nutritional effects on their growth. The current growth monitoring techniques are too stressful, however, for the smallest preterm infants. We performed a systematic review to summarize studies on stress-free techniques for measuring the body size of preterm infants inside incubators other than the traditional calliper and tape measure-based instruments. Methods We searched four online literature databases: Embase, Medline, Web of Science Core Collection, and Cochrane, using search terms related to patients (neonates, infants, children) and body size measuring techniques. By means of expert judgement we assessed the techniques’ suitability for stress-free body size measurement of an infant lying in an incubator. As a criterion for suitability, we used an imaginary ideal technique. Results Twenty-six studies were included in this review. In 24 studies, the technique for body size measurement was related to 3D technology, and the majority of these studies acknowledged clinical superiority of 3D over 2D data. Two 3D techniques were assessed as suitable for stress-free measurement of preterm infants inside incubators. The first technique used a commercially available 3D handheld scanner which needed 3D postprocessing to derive measurement data. The second technique used a self-developed stereoscopic vision system. Conclusions 3D volumetric parameters have higher clinical value for growth monitoring than 2D. In addition, contactless 3D measurements enable stress-free growth monitoring of even the smallest preterm infants. However, the time-consuming 3D postprocessing challenges the usability of 3D techniques. Regrettably, none of the identified suitable 3D techniques met all our requirements of an ideal all-in-one body size measuring technique for extreme preterm infants. Handheld 3D scanning might have the best properties for developing this ideal technique.

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Section: Characteristics Of Studies and Methodological Qualitymentioning

confidence: 99%